Japanese
THERVEK F
Low cement castables

THERVEK F

Free-flow Casting

A low cement castable requiring no external vibration.

  • Compared with conventional cement castable refractories, it achieves high flowability with less mixing water, allowing the material to be cast easily into forms without external vibration or rodding.
  • Add the specified amount of water and mix in a mixer, then pour without vibration. When using free‑flow casting, appropriate formwork should be installed in advance.
  • Thanks to the action of ultra‑fine particles, the required strength can be achieved within 24 hours at ambient temperature.

Main applications

  • High-temperature furnaces
  • Various industrial kilns and furnaces
  • Incinerators
  • Boilers
Selected Products

THERVEK F

  • F-1800K(1800℃)
  • F-1700K(1700℃)
  • F-1650K(1650℃)
  • F-SIC80K
  • F-SIC50K

Key Features of the THERVEK™ F Series

  • By optimizing the combination of ultra-fine raw materials and dispersants, the mix achieves high flowability, enabling Free-flow casting.
  • It allows construction of linings with excellent corrosion resistance, heat resistance, strength, and abrasion resistance—delivering performance comparable to shaped refractories—without the need for vibrators.
  • It is ideal for installation in confined areas and in locations where vibrators cannot be used.

Flow Casting Test of THERVEK™ F Castables

When casting into a U-shaped form like the one shown below, the material can be poured from one side and will fill uniformly all the way to the opposite side.

Casting begins

1. Start of casting

Start pouring THERVEK F.

Casting

2. During casting

During casting, the material flows naturally through the form.

Casting complete

3. Completion of casting

At the end of casting, the form is filled uniformly and satisfactorily.